ad. Pertaining to the computer or architecture in question.
the GNU version of the Collaborative International Dictionary of English
ad. By natural or original condition; naturally; originally.
The Century Dictionary and Cyclopedia
By birth; naturally; originally.
Word Usage
"11: 06PM Kevin Purdy | CrossOver, a commercially-modified version of the free WINE platform that lets Linux and Mac users run Windows apps semi-natively, is giving away free licenses for all their products today."